[13] By June 2019, Megvii had 2,349 employees,[14] and was valued at over $4 billion,[2] as the "world’s biggest provider of third-party authentication software",[3] with 339 corporate clients in 112 cities in China.

[12] In May 2019, Human Rights Watch reported finding Face++ code in the Integrated Joint Operations Platform (IJOP), a police surveillance app used to collect data on, and track the Uyghur community in Xinjiang.

[10] Human Rights Watch released a correction to its report in June 2019 stating that Megvii did not appear to have collaborated on IJOP, and that the Face++ code in the app was inoperable.

[6]: 101 Megvii was sanctioned by the US government, and placed on the United States Bureau of Industry and Security's Entity List on October 9, 2019, due to the use of its technology for human rights abuses against Uyghurs in Xinjiang.

[16][12] In December 2021, the United States Department of the Treasury prohibited all U.S. investment in Megvii, accusing the company of complicity in aiding the persecution of Uyghurs in China.